Paul S Matthews

US Patent:

55564461, Sep 17, 1996

Filed:

May 19, 1995

Appl. No.:

8/445178

Inventors:

Paul E. Matthews - Lawrenceville NJ
Thomas W. Pelletiers - Bethlehem PA

Assignee:

United States Bronze Powders - Flemington NJ

International Classification:

C22C 904

US Classification:

75255

Abstract:

Brass powder metallurgy compositions for use in manufacturing a brass part by powder metallurgy techniques. The compositions comprise from about 70-90% wt. copper, 10-30% wt. zinc, and from about 0. 1-1. 5% wt. graphite as an addition to improve the machinability of the resultant compacted brass part. The compositions preferably contain less than 2% wt. lead.

US Patent:

41697308, Oct 2, 1979

Filed:

Jan 24, 1978

Appl. No.:

5/871967

Inventors:

Paul E. Matthews - Lawrenceville NJ
Kenneth C. Ramsey - Pottersville NJ

Assignee:

United States Bronze Powders, Inc. - Flemington NJ

International Classification:

C22C 900
C22C 902

US Classification:

75157

Abstract:

A non-ferrous powder formed of a prealloy of copper, tin and zinc, the present article of manufacture exhibits sufficient green strength to allow direct compacting and sintering of useful articles from the "as atomized" form. The present prealloy powder is preferably air atomized from an alloy of copper, tin and zinc, the respective nominal weight percents of the components in the resulting prealloy powder being 89%, 9% and 2%. The present prealloy powder is preferably lubricated with conventional dry organic lubricants and can optionally be blended with carbonyl iron, carbonyl iron nominally comprising 1. 0% to 3. 0% by weight of the powder.

US Patent:

D2737876, May 8, 1984

Filed:

Nov 5, 1981

Appl. No.:

6/318640

Inventors:

Paul C. Matthews - Brooklyn NY

US Classification:

D14101

US Patent:

54456657, Aug 29, 1995

Filed:

Sep 29, 1993

Appl. No.:

8/094017

Inventors:

Paul E. Matthews - Lawrenceville NJ
Thomas W. Pelletiers - Bethlehem PA

Assignee:

United States Bronze Powders, Incorporated - Flemington NJ

International Classification:

C22C 904

US Classification:

75255

Abstract:

A powdered metallurgical composition comprising copper and zinc, which composition also includes a proportion of 0. 1 to 1. 5% by weight of graphite to improve the machinability of an article made from the composition.

US Patent:

45410569, Sep 10, 1985

Filed:

Jul 13, 1983

Appl. No.:

6/513367

Inventors:

Paul G. Matthews - Somerset NJ

Assignee:

AT&T Bell Laboratories - Murray Hill NJ

International Classification:

G06F 100

US Classification:

364300

Abstract:

A topic announcement routine is provided and is called by an announce flag included in a flag field of an author-selected topic title definition in a course material database. Each call of such a flagged topic causes the routine to display for a student an announcement that a new topic is about to begin, and to make available to the student an opportunity to select a command from a predetermined set of commands including at least one address-generic transfer command. Control flags, such as an announce flag or the presence of text in the title field of a topic definition, are employed for various purposes, such as marking the end of transfer under a transfer command for that topic, or disabling selected commands of the set.

US Patent:

42869870, Sep 1, 1981

Filed:

Nov 28, 1979

Appl. No.:

6/097904

Inventors:

Paul E. Matthews - Lawrenceville NJ

Assignee:

United States Bronze Powders, Inc. - Flemington NJ

International Classification:

B22F 100
C23C 300

US Classification:

75252

Abstract:

An infiltrant product composition is disclosed for impregnating an iron powder compact. The infiltrant alleviates typical problems associated with use of infiltrating materials, including partial dissolution of iron base matrix by the infiltrant with consequent severe erosion, oxidizing or reducing effects of furnace atmospheres on infiltrant yield, and incompatible characteristics of infiltrant with the iron base matrix. The preferred infiltrant composition is by weight about 98. 25% copper alloy and 1. 75% carbonyl type iron powder. An additional 0. 05% of aluminum to reduce residual formation and minimize residual adherence and 0. 5% of a conventional lubricant based on the copper-iron mixture are added. The infiltrant is in a dry, compactible form.